superhard
adjective
su·per·hard
ˌsü-pər-ˈhärd 
: extremely hard
One way to achieve such a high pressure … is to squeeze a sample between two superhard surfaces.—
William J. Nellis
William J. NellisExamples of superhard in a Sentence
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Disruptions in the supply of superhard materials could hinder the production of high-precision components, affecting industries that rely on advanced machining and tooling.
—Joseph Epstein, Newsweek, 10 Dec. 2024
Being a parent is superhard.
—Kate Siber, Outside Online, 13 June 2019
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Joseph Epstein, Newsweek, 10 Dec. 2024
Being a parent is superhard.
—Kate Siber, Outside Online, 13 June 2019
Cite this Entry
“Superhard.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/superhard. Accessed 31 Oct. 2025.
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